SECTION 6 Troubleshooting
ESP 400C and 600C Plasma Power Sources
6-3
Power Reset Fault Indicator
(on front panel)
Illuminates when a serious fault is detected. Input
power must be disconnected for a least 5 seconds
to clear this fault. Check PCB1 Red LEDs 6, 9, 10,
11, 12, and 13 if this fault is illuminated for further
diagnosis.
LED 6 – (red) Right Overcurrent Fault
–
Illuminates when the current out of the right side
chopper is too high (300 amps). This current is
measured by the right-side hall sensor. The power
source is shut down.
LED 9 – (red) Left Overcurrent Fault
–
Illuminates when the current from the left side
chopper is too high (300 amps). Measured by the
left hall sensor. Power source is shut down.
LED 10 _ (red) Left IGBT Unsaturated Fault
–
Illuminates when left IGBT is not fully conducting.
PS (PS) is shut down.
LED 11 – (red) Right IGBT Unsaturated Fault
–
Illuminates when right IGBT is not fully conducting.
Power Source (PS) is shut down.
LED 12 – (red) Left -(neg) 12V Bias Supply
Fault
– Illuminates when negative 12 V bias supply
to the left side IGBT gate drive circuit (located on
PWM-drive board PCB2) is missing. PS is shut
down.
LED 13 – (red) Right –(neg) 12V Bias Supply
Fault
- Illuminates when negative 12 V bias supply
to the right side IGBT gate drive circuit (located on
PWM-drive board PCB3) is missing. PS is shut
down.
Summary of Contents for 0558001729
Page 1: ...F 15 657 Jun 2005 Installation Operation and Maintenance for the ESP 400C Plasma Power Source...
Page 6: ...ESP 400C Plasma Power Source Table of Contents iv This page intentionally left blank...
Page 110: ...SECTION 7 Replacement Parts ESP 400C Plasma Power Source 7 10 7 7 Top View...
Page 112: ...SECTION 7 Replacement Parts ESP 400C Plasma Power Source 7 12 7 8 Back Inside View 2 1 4 2 3...
